11004020 has 24 divisors (see below), whose sum is σ = 23428104. Its totient is φ = 4340736.

The previous prime is 11004017. The next prime is 11004023. The reversal of 11004020 is 2040011.

It is an interprime number because it is at equal distance from previous prime (11004017) and next prime (11004023).

It can be written as a sum of positive squares in 4 ways, for example, as 1094116 + 9909904 = 1046^2 + 3148^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11003989 and 11004007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11004023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2309 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (976171).

Almost surely, 2^11004020 is an apocalyptic number.

11004020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11004020 is an abundant number, since it is smaller than the sum of its proper divisors (12424084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11004020 is a wasteful number, since it uses less digits than its factorization.

11004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7619 (or 7617 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 11004020 is about 3317.2307727983. The cubic root of 11004020 is about 222.4250978784.

Adding to 11004020 its reverse (2040011), we get a palindrome (13044031).

The spelling of 11004020 in words is "eleven million, four thousand, twenty".